CAUTION
Access to this menu Change init.set is recommended only if you intend to completely reprogram the
device starting from the factory settings.
The changes to the parameters made from this menu become effective only once the initial configu-
ration has been completed, i.e. when Change init.set / COMPLETEDappears.
All other device parameters will be reset to factory settings.
9.7. Control parameters
Parameter Default Description 1 2 3 4 5
Control mode
1. Constant value
2. Fix speed
3. Const.value 2set
4. Fix speed 2 val.
5. External speed
Constant
value
The following control modes can be selected:
1. Constant value: the device varies the speed of the pump in
such a way as to keep the set value constant regardless of
water consumption.
2. Fix speed: the device powers the pump at the set frequen-
cy.
3. Const.value 2set: two desired values can be selected by
opening or closing digital input 2.
4. Fix speed 2 val.: two desired frequency values can be
selected by opening or closing digital input 2.
5. External speed: it is possible to control the motor frequen-
cy through an analog signal connected to analog input 4.
x x x x x
AUX control mode
XXXXXXXX
Constant
value
Operate on digital input 4 to switch from the main control mode
to the auxiliary control mode and vice versa.
x x x x x
Max alarm value
p = XX.X [bar]
10 Value that can be reached in the system beyond which, even
in constant frequency operating mode, the pump is stopped
and an alarm signal is emitted. The pump is restarted only
after the measured value has dropped below the maximum
alarm value for more than 5 seconds.
x x x x x
Min alarm value
p = XX.X [bar]
0 Minimum value that can be reached in the system below
which, even in constant frequency operating mode, the pump
is stopped and an alarm signal is emitted. The pump is restar-
ted only after the measured value has risen above the mini-
mum alarm value for more than 5 seconds.
x x x x x
Pipe Fill Ramp
XXX [s]
=
Ramp up
time
Ramp time to follow after a start if the measured value is lower
than the minimum alarm value. The piping filling ramp expires
after the set time or if the measured value reaches the set
value.
In COMBO mode, only one unit is enabled to operate as long
as the filling ramp is active.
x x
Ext.set enabling
ON/OFF
OFF Enabling the setting of the set value via analog input 3. x x
Set value
p = XXX.X [bar]
3 Value that you want to keep constant. x
Compensation
p = XXX.X [bar]
0 Compensation at the maximum frequency. The sign can be
reversed via the green key.
2 (1 bar)
3 (3 bar)
1
4 bar
300 m
4 5
Q
H
1: sensor; 2: Compensation ; 3: Set value ; 4: Min motor freq.;
5: Max motor freq.
In the case of a group of pumps in COMBO mode, the com-
pensation must be referred to each pump.
x
VASCO - VAriable Speed COntroller
38
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